Ionospheric Alfvén resonator and aurora: Modeling of MICA observations

2017 ◽  
Vol 122 (7) ◽  
pp. 7530-7540 ◽  
Author(s):  
B. Tulegenov ◽  
A. V. Streltsov
2015 ◽  
Vol 21 (1(92)) ◽  
pp. 58-63
Author(s):  
N.A. Baru ◽  
◽  
A.V. Koloskov ◽  
Y.M. Yampolski ◽  
◽  
...  

2000 ◽  
Vol 27 (23) ◽  
pp. 3805-3808 ◽  
Author(s):  
A. G. Demekhov ◽  
V. Yu. Trakhtengerts ◽  
T. Bösinger

2001 ◽  
Vol 106 (A11) ◽  
pp. 25813-25824 ◽  
Author(s):  
Oleg A. Pokhotelov ◽  
V. Khruschev ◽  
M. Parrot ◽  
S. Senchenkov ◽  
V. P. Pavlenko

2004 ◽  
Vol 22 (2) ◽  
pp. 643-651 ◽  
Author(s):  
K. Prikner ◽  
K. Mursula ◽  
J. Kangas ◽  
R. Kerttula ◽  
F. Z. Feygin

Abstract. On 2 December 1999, the magnetometer stations in northern Finland registered structured Pc1 activity simultaneously in three distinct frequency bands. Using simultaneous EISCAT radar measurements of the high-latitude ionosphere, we have studied the ionospheric resonator properties during this multiband Pc1 event. The frequencies of the three structured Pc1 bands were found to closely correspond to the second, third and fourth harmonic of the calculated fundamental frequency of the ionospheric Alfvén resonator (IAR). In addition, those frequencies of the three pearl bands that were closest to the exact IAR harmonics were found to have the strongest intensities. The results demonstrate that the resonator can have an important role on ground-based Pc1 activity over a notably large frequency range, favoring transmission of waves with frequencies close to the resonator's eigenfrequencies. Since the frequencies of all three bands correspond to the maximum rather than the minimum of the transmission coefficient, the traditional bouncing wave packet model needs to be revised. Key words. Ionosphere (auroral ionosphere; ionosphere magnetosphere interactions; wave propagation)


2006 ◽  
Vol 24 (8) ◽  
pp. 2151-2158 ◽  
Author(s):  
A. Odzimek ◽  
A. Kułak ◽  
A. Michalec ◽  
J. Kubisz

Abstract. ULF/ELF magnetic field data recorded at the "Hylaty" station in Poland (49°19' N, 22°56' E; L≃2) are analysed to find the characteristics of spectral resonance structures (SRS) in the frequency range 1–5 Hz, related to the ionospheric Alfvén resonator (IAR). An automatic procedure is employed to SRS events observed at "Hylaty" during the nighttime in 2001–2003, to calculate the parameter which determines the separation between the harmonics of the resonator, termed the frequency scale. Diurnal and seasonal variations of the frequency scale within the range of 0.4–0.8 Hz have been found. The usefulness and disadvantages of this particular method of SRS analysis, and of other methods, are discussed.


2013 ◽  
Vol 118 (4) ◽  
pp. 1514-1528 ◽  
Author(s):  
Robert L. Lysak ◽  
Colin L. Waters ◽  
Murray D. Sciffer

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